# Ping (UORB message)



[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/Ping.msg)

```c
uint64 timestamp            # time since system start (microseconds)
uint64 ping_time            # Timestamp of the ping packet
uint32 ping_sequence        # Sequence number of the ping packet
uint32 dropped_packets      # Number of dropped ping packets
float32 rtt_ms              # Round trip time (in ms)
uint8 system_id             # System ID of the remote system
uint8 component_id          # Component ID of the remote system

```
